<template>
	<view class="flex flex-col relative">
		<view
			class="flex-1 flex flex-col relative contentbody overflow"
			ref="contentbody"
			:style="[
				isMaxheight && !isOpen ? { height: props.height + 'rpx' } : '',
				!isInit ? { transform: 'translateX(-1000px)' } : { transform: 'translateX(0px)' }
			]"
		>
			<slot></slot>
		</view>
		<view
			@click.stop="open"
			v-if="isMaxheight"
			class="flex zIndex-10 flex-row flex-row-bottom-center py-24 flex"
			:class="[!css_is_nvue && !isOpen ? 'fulled-height' : '', isOpen ? '' : isDark ? 'darkBg absolute' : 'lightBg absolute']"
			:style="[
				!css_is_nvue ? { width: '100%', 'box-sizing': 'border-box' } : '',
				css_is_nvue && !isOpen ? { width: css_nvue_size[0] + 'px', height: css_nvue_size[1] + 'px' } : '',
				{'background-image': isDark?`linear-gradient(to top, ${props.darkMaskColor[0]}, ${props.darkMaskColor[1]})`:`linear-gradient(to top, ${props.lightMaskColor[0]} 30%, ${props.lightMaskColor[1]} 50%)`}
			]"
		>
			<slot name="more">
				<view :userInteractionEnabled="false" class="flex flex-row flex-row-center-center">
					<tm-icon :font-size="24" :color="fontColor" :name="isOpen ? 'tmicon-angle-up' : 'tmicon-angle-down'"></tm-icon>
					<tm-text :font-size="24" :color="fontColor" _class="px-16" :label="isOpen ? props.openLabel : props.closeLabel"></tm-text>
				</view>
			</slot>
		</view>
	</view>
</template>
<script lang="ts" setup>
/**
 * 显示更多
 * @description 超过指定高度，默认隐藏更多内容。
 * @slot more 底部展开和收起更多的工具条的插槽。
 */
import { getCurrentInstance, computed, ref, provide, inject, onMounted, onUnmounted, onUpdated, nextTick, watch, PropType } from 'vue'
import tmIcon from '../tm-icon/tm-icon.vue'
import tmText from '../tm-text/tm-text.vue'
import { custom_props, computedTheme, computedClass, computedStyle, computedDark } from '../../tool/lib/minxs'
import { useTmpiniaStore } from '../../tool/lib/tmpinia'
const store = useTmpiniaStore()
// #ifdef APP-PLUS-NVUE
const dom = uni.requireNativePlugin('dom')
// #endif
/**
 * 事件说明
 * change:打开和隐藏时触发，返回当前打开的状态值。
 */
const emits = defineEmits(['change'])
const props = defineProps({
	...custom_props,
	//超过指定高时隐藏并显示更多。
	height: {
		type: Number,
		default: 250
	},
	openLabel: {
		type: String,
		default: '收起更多'
	},
	closeLabel: {
		type: String,
		default: '展开更多'
	},
	//在点击打开之前执行。如果返回false，将阻止查看内容。也要吧返回Promise
	beforeOpen: {
		type: [Function, Boolean],
		default: () => false
	},
	lightMaskColor:{
		type:Array as PropType<string[]>,
		default:()=>['rgba(255, 255, 255, 1)','rgba(255, 255, 255, 0.7)']
	},
	darkMaskColor:{
		type:Array as PropType<string[]>,
		default:()=>['rgba(0, 0, 0, 1)','rgba(0, 0, 0, 0)']
	}
})
// 设置响应式全局组件库配置表。
const tmcfg = computed(() => store.tmStore)
//是否暗黑模式。
const isDark = computed(() => computedDark(props, tmcfg.value))
const isInit = ref(false)
const proxy = getCurrentInstance()?.proxy ?? null
let timeId: any = NaN
const css_is_nvue = ref(true)
// #ifndef APP-NVUE
css_is_nvue.value = false
// #endif
const css_nvue_size = ref([0, 0])
const isOpen = ref(false)
const fontColor = computed(() => {
	if (isDark.value && !isOpen.value) return 'white'
	if (isDark.value && isOpen.value) return 'grey'
	return 'black'
})
//是否超过了指定高度。
const isMaxheight = ref(false)
const maxHeight = computed(() => uni.upx2px(props.height))
async function open() {
	if (typeof props.beforeOpen === 'function') {
		let p = await props.beforeOpen().catch((e) => {})
		if (typeof p === 'function') {
			p = await p()
		}
		if (!p) return
	}
	isOpen.value = !isOpen.value
	emits('change', isOpen.value)
}
onUpdated(() => {
	nvuegetClientRect()
})
onUnmounted(() => clearTimeout(timeId))
onMounted(() => {
	nvuegetClientRect()
})
function nvuegetClientRect() {
	nextTick(function () {
		// #ifdef APP-PLUS-NVUE
		dom.getComponentRect(proxy?.$refs.contentbody, function (res: any) {
			if (res?.size) {
				css_nvue_size.value = [res.size.width, res.size.height]

				if (res.size.height >= maxHeight.value) {
					isMaxheight.value = true
				}
				if (res.size.height == 0) {
					clearTimeout(timeId)
					timeId = setTimeout(() => {
						nvuegetClientRect()
					}, 250)
				} else {
					isInit.value = true
				}
			}
		})
		// #endif
		// #ifndef APP-PLUS-NVUE
		uni.createSelectorQuery()
			.in(proxy)
			.select('.contentbody')
			.boundingClientRect((res) => {
				if (res?.height == 0) {
					clearTimeout(timeId)
					timeId = setTimeout(() => {
						nvuegetClientRect()
					}, 250)
				} else {
					if ((res?.height ?? 0) >= maxHeight.value) {
						isMaxheight.value = true
					}
					isInit.value = true
				}
			})
			.exec()
		// #endif
	})
}
</script>
<style scoped>
.lightBg {
	background-image: linear-gradient(to top, rgba(255, 255, 255, 1) 30%, rgba(255, 255, 255, 0.7) 50%);
}

.darkBg {
	background-image: linear-gradient(to top, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0));
}
</style>
